Overview
A significant vulnerability has been identified in TOTOLINK X15 1.0.0-B20230714.1105. This critical vulnerability, identified as CVE-2025-6146, affects an unspecified part of the file /boafrm/formSysLog of the component HTTP POST Request Handler. The vulnerability is of particular concern because it can be exploited remotely, thereby putting a vast number of systems at risk. The severity of the issue is amplified due to the fact that details of the exploit have been publicly disclosed, increasing the likelihood of it being utilized by malicious actors.
Vulnerability Summary
CVE ID: CVE-2025-6146
Severity: Critical (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage, leading to unauthorized access to sensitive data and resources.
Affected Products
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Product | Affected Versions
TOTOLINK X15 | 1.0.0-B20230714.1105
How the Exploit Works
The exploit operates by manipulating the ‘submit-url’ argument in a HTTP POST request to the /boafrm/formSysLog file. This manipulation results in a buffer overflow, a common type of vulnerability stemming from errors in memory management. When exploited, it can lead to arbitrary code execution, allowing an attacker to potentially gain control over the system or access sensitive data.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited. It’s represented as a malicious HTTP POST request:
POST /boafrm/formSysLog HTTP/1.1
Host: vulnerable-device.com
Content-Type: application/x-www-form-urlencoded
submit-url=...&malicious_payloadIn this example, the ‘submit-url’ argument is manipulated with a malicious payload, triggering the buffer overflow.
Recommendations
To mitigate this vulnerability, users are advised to apply the vendor patch once available. In the meantime, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary measure to detect and block attempts to exploit this vulnerability. Regular system and software updates, as well as continuous monitoring of system logs, are also recommended to identify any unusual activity.